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rims and tires



 
 
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  #11  
Old December 19th 05, 01:20 PM posted to rec.autos.makers.mazda.miata
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Default rims and tires

Thank you guys for all your info I'm learning more from this group about
the rims and tires that I ever knew I like all the info everyone gives its
a big help
Happy Holidays and Happy New Year everyone

"pws" > wrote in message
...
>L Bader wrote:
>> If you are set on going to 16" rims, the two sizes you should look at
>> a
>>
>> - 215/40R16 (0.4% change in size)
>> - 205/45R16 (2.6% increase in size)
>>
>> The 40-profile tires will give a harsher ride, and greater risk of
>> damage with pot-holed streets.

>
> Barely. The 205/40/16 tires I have are almost the exact same profile
> height as the 195/50/15's on my last miata.
>
>> Both will increase your contact patch, but unless you are adding
>> power, you will only see a cornering improvement. (And with the 215's
>> a potential decrease in acceleration...)

>
> You will only see a cornering improvement in some situations. The car will
> have more grip, but it will loose "tossability" with any increase in wheel
> width.
> Of course, the autocross people running 13X8's are not finding it too much
> of a problem. ;-)
>
>> Regardless, you will have a *hard* time finding a 16" rim and tire
>> combo that is equal to or lighter than the stock rims. (Stock 15"
>> 5-spoke is just at 15-lbs...) -- Those that you will find are
>> normally moderate to high dollar items.

>
> The stock 15" 5-spoke miata alloy is 13.2 pounds if we are talking about
> the style that was introduced with the M2.
> I have weighed them on a digital scale and it matches the weight listed on
> miata.net.
> The forged 16X7 SSR's are something like 10 1/2 pounds, and yes, they are
> very expensive.
>
>
>> Lanny's post is best on the mark if you are not looking any farther
>> (performance wise) than changing the rims/tires. -- For that I would
>> advise the Konig Heliums w/ 195/50R15s
>>
>> - L

>
> I would definitely stay with 195/50/15's if there are no plans to increase
> the power to a large degree.
>
> There are a lot of advantages to the smaller and less expensive wheels;
> less expensive tires, generally less wheel weight per dollar spent, and
> less cost if you ruin one, plus thieves tend to ignore 14 and 15 inch
> wheels for the most part.
>
> I could find a replacement wheel for my last miata for about $80.00 if I
> ruined it. That has now changed to over $300.00, yikes! I "curb-surf" a
> bit more carefully these days.
>
> Pat



Ads
  #12  
Old December 20th 05, 01:31 AM posted to rec.autos.makers.mazda.miata
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Default rims and tires

On Mon, 19 Dec 2005 01:27:47 GMT, pws > wrote:

>L Bader wrote:
>> If you are set on going to 16" rims, the two sizes you should look at
>> a
>>
>> - 215/40R16 (0.4% change in size)
>> - 205/45R16 (2.6% increase in size)
>>
>> The 40-profile tires will give a harsher ride, and greater risk of
>> damage with pot-holed streets.

>
>Barely. The 205/40/16 tires I have are almost the exact same profile
>height as the 195/50/15's on my last miata.


Using 195/50R15 v. 215/40R16, with a 0.4% change in overall diameter,
yet a 1 inch increase in rim size, I calculate a loss in profile
height. -- Where am I wrong?

>
>> Both will increase your contact patch, but unless you are adding
>> power, you will only see a cornering improvement. (And with the 215's
>> a potential decrease in acceleration...)

>
>You will only see a cornering improvement in some situations. The car
>will have more grip, but it will loose "tossability" with any increase
>in wheel width.
>Of course, the autocross people running 13X8's are not finding it too
>much of a problem. ;-)
>
>> Regardless, you will have a *hard* time finding a 16" rim and tire
>> combo that is equal to or lighter than the stock rims. (Stock 15"
>> 5-spoke is just at 15-lbs...) -- Those that you will find are
>> normally moderate to high dollar items.

>
>The stock 15" 5-spoke miata alloy is 13.2 pounds if we are talking about
>the style that was introduced with the M2.
>I have weighed them on a digital scale and it matches the weight listed
>on miata.net.


I am referring to the 5-spoke Enkei's on the '97 STO (Miata.net has
them listed at 14.5-lbs...)

>The forged 16X7 SSR's are something like 10 1/2 pounds, and yes, they
>are very expensive.
>
>
>> Lanny's post is best on the mark if you are not looking any farther
>> (performance wise) than changing the rims/tires. -- For that I would
>> advise the Konig Heliums w/ 195/50R15s
>>
>> - L

>
>I would definitely stay with 195/50/15's if there are no plans to
>increase the power to a large degree.
>
>There are a lot of advantages to the smaller and less expensive wheels;
>less expensive tires, generally less wheel weight per dollar spent, and
>less cost if you ruin one, plus thieves tend to ignore 14 and 15 inch
>wheels for the most part.
>
>I could find a replacement wheel for my last miata for about $80.00 if I
>ruined it. That has now changed to over $300.00, yikes! I "curb-surf" a
>bit more carefully these days.
>
>Pat


'97 STO, "Chouki"

// Change TEJAS to TX to reply via eMail //
  #13  
Old December 20th 05, 02:11 AM posted to rec.autos.makers.mazda.miata
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Posts: n/a
Default rims and tires

L Bader wrote:

> Using 195/50R15 v. 215/40R16, with a 0.4% change in overall diameter,
> yet a 1 inch increase in rim size, I calculate a loss in profile
> height. -- Where am I wrong?


You aren't wrong, I am. My math sucks.
50% of 195 is 97.5.
40% of 205 is 82.
Definitely lower profile.

> I am referring to the 5-spoke Enkei's on the '97 STO (Miata.net has
> them listed at 14.5-lbs...)


Those aren't the wheels that most people are thinking of when you
mention 5-spoke 15" miata alloys. The wheels that you have are semi-rare.
Except for the special editions, Mazda did not start using 15 inch
wheels until 1999.

I had a set of the same Enkei wheels, they also came standard on the
1996 "M" edition, but those were the only two cars that Mazda put them
on, less than 8,000 sets of that style of wheel total.

They are still one of my favorite looking factory miata wheels. Much
better looking than that nasty looking lightweight set they put on the
'93LE and the '95M. ;-)

Pat (running for cover)
  #14  
Old December 21st 05, 02:17 AM posted to rec.autos.makers.mazda.miata
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Default rims and tires

you better run! talkin' trash 'bout my 92SE wheels too there texas boy ;-)

Hey, the 99 I just bought has these great looking 17"wheels, they're by TSW
and I was hoping that they would be light or semi light, I was wrong. In
comparison, I've weighed a wheel and tire combo on the 14"BBS forged wheels
(that Pat is talking trash about) at about 25lbs, a 14" steel wheel and tire
combo at about 35lbs and.........drum roll please..........one of my new 17"
TSW wheels with tire at 40 stinkin' pounds! I'm hoping to get a chance to
transfer the set and be able to drive the 99 with the BBS to see the actual
handling difference. That should be interesting!

Weights above are not precise or directly comparable as all three tires are
different sizes and brands.

Chris
92BB&T SE FS
99BBB

"pws" > wrote in message
...
>L Bader wrote:
>
>> Using 195/50R15 v. 215/40R16, with a 0.4% change in overall diameter,
>> yet a 1 inch increase in rim size, I calculate a loss in profile
>> height. -- Where am I wrong?

>
> You aren't wrong, I am. My math sucks.
> 50% of 195 is 97.5.
> 40% of 205 is 82.
> Definitely lower profile.
>
>> I am referring to the 5-spoke Enkei's on the '97 STO (Miata.net has
>> them listed at 14.5-lbs...)

>
> Those aren't the wheels that most people are thinking of when you mention
> 5-spoke 15" miata alloys. The wheels that you have are semi-rare.
> Except for the special editions, Mazda did not start using 15 inch wheels
> until 1999.
>
> I had a set of the same Enkei wheels, they also came standard on the 1996
> "M" edition, but those were the only two cars that Mazda put them on, less
> than 8,000 sets of that style of wheel total.
>
> They are still one of my favorite looking factory miata wheels. Much
> better looking than that nasty looking lightweight set they put on the
> '93LE and the '95M. ;-)
>
> Pat (running for cover)



  #15  
Old December 22nd 05, 06:42 AM posted to rec.autos.makers.mazda.miata
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Default rims and tires

Chris D'Agnolo wrote:
> you better run! talkin' trash 'bout my 92SE wheels too there texas boy ;-)


Heh-heh, I actually like the way the BBS wheels look.
It was just typical that the 1996 "M" edition that I bought had wheels
that I liked the looks of a bit better than the BBS wheels on the "M" of
the year before, but they weighed something like 4 additional pounds
each, the heaviest alloy wheel released on a miata at that point.

> Hey, the 99 I just bought has these great looking 17"wheels, they're by TSW
> and I was hoping that they would be light or semi light, I was wrong. In
> comparison, I've weighed a wheel and tire combo on the 14"BBS forged wheels
> (that Pat is talking trash about) at about 25lbs, a 14" steel wheel and tire
> combo at about 35lbs and.........drum roll please..........one of my new 17"
> TSW wheels with tire at 40 stinkin' pounds! I'm hoping to get a chance to
> transfer the set and be able to drive the 99 with the BBS to see the actual
> handling difference. That should be interesting!


I still have the stock 15" alloys with the EVS-100's because I haven't
made a final decision on selling them yet. (may go back to a more stock
miata). I think that they are about 30 pounds, 13.2 pounds for the wheel.
We could put those on your miata and you would have an idea of how the
car is stock, except for the much better tires, of course.

I don't think that I have seen a 1999+ with the BBS wheels on it. You
might like how they look on there and going from 40 to 25 pounds per
wheel/tire will make a huge difference.
You also shouldn't have any problem selling the TSW's if you decide to
replace them.

Pat
  #16  
Old December 22nd 05, 03:04 PM posted to rec.autos.makers.mazda.miata
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Default rims and tires

My '96 came with Borbet wheels and tires that say "Ecasta Supra 205/50R15
86V" on them. I've got the stock wheels on now because the above didn't seem
ideal (to say the least) for winter driving. I don't know squat about
*wheels/tires... can anyone comment on these?

miker


*except that every car I've had with alloys has had rim leaks and has needed
at least one bent wheel replaced. No problem with steelies here!





  #17  
Old December 23rd 05, 09:15 AM posted to rec.autos.makers.mazda.miata
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Default rims and tires

miker wrote:
> My '96 came with Borbet wheels and tires that say "Ecasta Supra 205/50R15
> 86V" on them. I've got the stock wheels on now because the above didn't seem
> ideal (to say the least) for winter driving. I don't know squat about
> *wheels/tires... can anyone comment on these?
>
> miker
>
>
> *except that every car I've had with alloys has had rim leaks and has needed
> at least one bent wheel replaced.


How many alloys is that total? Sounds like bad luck. I have been driving
for 21 years now and have lost track of how many different sets of alloy
wheels I have bought, used, sold, etc., but it is a lot.

Most of these have been factory. I currently have two sets of 5-spoke
15" miata wheels, as well as a set of SSR comps that I have been driving
on for about 12,000 miles.

None of these are bent, and none have rim leaks. I drove the '96M with 3
different sets of wheels on it for over 5 years and never had a rim leak
or wheel bend. That is now over 6 years and over 85,000 miles without a
rim leak or a wheel bend using four different sets of alloys, just
counting miatas.

In 21 years I remember two rim leaks and I have never bent a wheel,
though I have scraped a curb or three.
I also never had a bent wheel on any car that I have bought. Again,
sounds like I have either had really good luck or vice-versa with you.

No problem with steelies here!

The problem is that they weigh 18 pounds, which is apparently what Mazda
uses as their maximum wheel weight before performance really suffers.
Less wheel weight is always good.
The car will drive fine with steelies, but it will drive better with
alloy wheels that weight less, assuming that they are not bent and are
holding air. ;-)

Pat
  #18  
Old December 23rd 05, 03:08 PM posted to rec.autos.makers.mazda.miata
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Default rims and tires

On 2005-12-23, pws > wrote:

> None of these are bent, and none have rim leaks. I drove the '96M with 3
> different sets of wheels on it for over 5 years and never had a rim leak
> or wheel bend. That is now over 6 years and over 85,000 miles without a
> rim leak or a wheel bend using four different sets of alloys, just
> counting miatas.


You're lucky. I drove a 96M for 6 years and had to have 2 of
the four wheels repaired. The first time, I remember the bump
that bent the wheel, and it had to be fixed immediately (the
tire would no longer seal). The second time I don't know when
it got bent -- I just noticed that the steering wheel was
vibrating, and the next time I had tires mounted they mechanic
showed me that the wheel was noticably out of round.

> In 21 years I remember two rim leaks and I have never bent a
> wheel, though I have scraped a curb or three. I also never had
> a bent wheel on any car that I have bought. Again, sounds like
> I have either had really good luck or vice-versa with you.


You must have much better roads that we have here in Minnesota.

--
Grant Edwards grante Yow! Everybody gets free
at BORSCHT!
visi.com
  #19  
Old December 23rd 05, 03:11 PM posted to rec.autos.makers.mazda.miata
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Default rims and tires

> > *except that every car I've had with alloys has had rim leaks and has
needed
> > at least one bent wheel replaced.

>
> How many alloys is that total? Sounds like bad luck.


I've had to buy three (all on different cars); I've had at least one rim
leak on *every* alloy car, probably 8-9 vehicles. My last, a '94 Acura
Legend, had intermittant rim leaks on three of the four rims. Maybe this is
Minnesota?

> No problem with steelies here!
>
> The problem is that they weigh 18 pounds


I understand the difference between sprung/unsprung weight for handling, but
so far as acceleration and speed I think the difference between me and a
100-lb 20-something lead-footed babe is going to make more difference than
that few pounds of wheels.

miker



  #20  
Old December 23rd 05, 04:19 PM posted to rec.autos.makers.mazda.miata
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Default rims and tires

In article . net>,
"miker" > wrote:

> > The problem is that they weigh 18 pounds

>
> I understand the difference between sprung/unsprung weight for handling, but
> so far as acceleration and speed I think the difference between me and a
> 100-lb 20-something lead-footed babe is going to make more difference than
> that few pounds of wheels.


Some have estimated the effect of unsprung mass on acceleration at 10X
that of sprung mass. Do you weigh >380 pounds? :-)

[here's the math: 10 x 4(18-11) + 100]

My tires lose about one psi per week. It was the same with the stock
wheels, so I assume that's normal for alloys. My Honda's steel wheels
might lose one psi per year.

--
Lanny Chambers
'94C, St. Louis
http://www.hummingbirds.net/alignment.html
 




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